"mmc: rockchip_sdhci: add phy and clock config for rk3399" broke spl emmc boot

[Alistair Delva]

Hi Yifeng,

Since "mmc: rockchip_sdhci: add phy and clock config for rk3399", my
RockPi 4b device can't boot off of eMMC. It will start tpl/spl and
then fail:

U-Boot TPL 2021.10-rc1-gac804143cf-dirty (Aug 11 2021 - 10:02:07)
Channel 0: LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB
Channel 1: LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB
256B stride
lpddr4_set_rate: change freq to 400000000 mhz 0, 1
lpddr4_set_rate: change freq to 800000000 mhz 1, 0
Trying to boot from BOOTROM
Returning to boot ROM...

U-Boot SPL 2021.10-rc1-gac804143cf-dirty (Aug 11 2021 - 10:02:07 +0000)
Trying to boot from MMC1
Card did not respond to voltage select! : -110
spl: mmc init failed with error: -95
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###

If I revert these changes, all is well:

commit a63a57e59d864a1ca2b0acb5fadc5c3579c3e79c
Author: Yifeng Zhao <yifeng.zhao at rock-chips.com>
Date:   Tue Jun 29 16:24:42 2021 +0800

   mmc: rockchip_sdhci: Add support for RK3568

commit ac804143cfd128d144403ef2434344988c3fde9f (refs/bisect/bad)
Author: Yifeng Zhao <yifeng.zhao at rock-chips.com>
Date:   Tue Jun 29 16:24:41 2021 +0800

   mmc: rockchip_sdhci: add phy and clock config for rk3399

Please let me know if you need help to test this.

Thanks,
Alistair.